CN104290451A - Printing apparatus and printing method - Google Patents

Abstract

The invention relates to a printing apparatus and a printing method. In a case in which a cumulative value [Sigma]Nure of wetting coefficients is less than a wetting threshold value THNure, printing is carried out on a unit area through a print mode in which an image is completed through a first number of instances of a scan, and in a case in which the cumulative value [Sigma]Nure is equal to or greater than the wetting threshold value THNure, printing is carried out on a unit area through a print mode in which an image is completed through a second number of instances of the scan, where the second number is greater than the first number.

Description

Printing device and Method of printing

Technical field

The present invention relates to a kind of printing device and Method of printing.

Background technology

Hitherto known image printing device, by spraying ink to print media while relative to print media mobile print head, forms image on the print medium, wherein, in printhead, arranges the multiple nozzles for spraying ink.In this kind of image printing device, adopt so-called multipass method: by multipass method, the unit area of scanning and printing medium repeatedly.

In this kind of printing device, when the frequency spraying ink is high, the known phenomenon that there will be below.The ink sprayed by nozzle, when moving to print media, is involved in nozzle surface ambient air, is depressurized near the component surface (being also called face below) therefore forming nozzle.As everyone knows, in order to compensate this kind of decompression state, surface of print media ambient air moves to nozzle surface, thus generates air-flow.When the amount of the ink once sprayed is larger, this ascending air from print media to nozzle is tending towards larger.There is phenomenon below: the so-called satellite ink droplet that the ink droplet generated when the ink sprayed splashes down at print media or the afterbody from the ink of ejection generate, be pulled on rightabout by ascending air and advance, thus adhere to nozzle surface (soaking hereinafter referred to as face).If by nozzle ejection ink after there occurs face and be wetting, then when spraying ink, wetting surface can affect ink, and the discharge performance thus such as spraying the speed of the direction of ink or the ink of ejection etc. changes.Therefore, ink may the position wanted on the print medium of land.

No. 1-71758, Japanese Unexamined Patent Publication discloses a kind of technology for suppressing to be soaked by face caused print quality degradation, wherein, obtain by counting of being formed on unit area during printhead scan unit region, and based on the surface of obtained wiping nozzle of counting.According to this disclosed technology, count more than wiping nozzle surface when the first value when obtained, and also wiping nozzle surface when below: by scanning the cumulative points formed the scanning of the scanning that specific unit region will be carried out, more than the second value across what carry out after and then last this surface of wiping.

But the technology according to No. 1-71758, Japanese Unexamined Patent Publication, whenever detecting that remarkable generating plane soaks, this face of wiping adheres to the ink in this face to remove, thus need to complete formation image on the print medium for a long time.Such as, print by substantially ejection ink has carried out image (hereinafter referred to as the solid-state image) of formation on the whole region of individual print medium, infer that face is wetting and occur quite frequent, thus the impact of the handling capacity printed is increased.

Summary of the invention

Consider that the problems referred to above make the present invention, and the present invention aims to provide a kind of can the suppression soaks caused print quality degradation by face and can suppress printing device and the Method of printing of throughput degradation.

According to an aspect of the present invention, a kind of printing device, it is by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described printing device is to comprise: selection unit, for selecting the first printing model or the second printing model for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number, wiper unit, is provided with the surface of the nozzle arrangement of described multiple nozzle for wiping, obtain unit, for obtain with scan as follows in black spray volume and the relevant first information, this scanning is the scanning the scanning carried out after the surface of and then nozzle arrangement described in described wiper unit wiping, to another scanning be ejected to by ink on one of unit area, and control unit, control to print for described first printing model selected by described selection unit or described second printing model, wherein, described selection unit: (i), when the value represented by the described first information that described acquisition unit obtains is the first value, selects described first printing model, and (ii) is when the value represented by the described first information that described acquisition unit obtains is the second value being greater than described first value, selects described second printing model.

According to a further aspect in the invention, a kind of printing device, it is by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described printing device is to comprise: selection unit, for selecting the first printing model or the second printing model for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number, wiper unit, is provided with the surface of the nozzle arrangement of described multiple nozzle for wiping, obtain unit, for obtain with scan as follows in black spray volume and the relevant first information, this scanning is the scanning the scanning carried out after the surface of and then nozzle arrangement described in described wiper unit wiping, to the single pass be ejected to by ink on one of unit area, and described acquisition unit also measures the second relevant information for obtaining with the ink that will be ejected on one of described unit area in described single pass, and control unit, control to print for described first printing model selected by described selection unit or described second printing model, wherein, described selection unit: (i), when the value represented by the described first information that described acquisition unit obtains is the first value, selects described first printing model, (ii) when the value represented by the described first information that described acquisition unit obtains be greater than the second value of described first value and value represented by described second information that obtains of described acquisition unit is the 3rd value, select described first printing model, and (iii) is when the value represented by the described first information that described acquisition unit obtains is described second value and value represented by described second information that obtains of described acquisition unit is the 4th value being greater than described 3rd value, selects described second printing model.

According to a further aspect in the invention, a kind of Method of printing, it is for by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described Method of printing is to comprise the following steps: select step, the first printing model or the second printing model is selected for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number, wiping is provided with the surface of the nozzle arrangement of described multiple nozzle, obtain with scan as follows in black spray volume and the relevant first information, this scanning is the scanning carried out after the surface of and then nozzle arrangement described in wiping, scanning to another being ejected to by ink on one of unit area scans, and control to print according to described first printing model selected in described selection step or described second printing model, wherein, i () is when the value represented by the described first information is the first value, select described first printing model, and (ii) when the value represented by the described first information is the second value being greater than described first value, select described second printing model.

According to a further aspect in the invention, a kind of Method of printing, it is for by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described Method of printing is to comprise the following steps: select step, the first printing model or the second printing model is selected for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number, wiping is provided with the surface of the nozzle arrangement of described multiple nozzle, obtain and the black spray volume in following scanning and the relevant first information, this scanning is the scanning the scanning carried out after the surface of and then nozzle arrangement described in wiping, to the single pass be ejected to by ink on one of unit area, and obtains and measure the second relevant information with the ink that will be ejected on one of described unit area in described single pass, and control to print according to described first printing model selected in described selection step or described second printing model, wherein, (i), when the value represented by the described first information is the first value, selects described first printing model, (ii) when the value represented by the described first information be greater than the second value of described first value and value represented by described second information is the 3rd value, select described first printing model, and (iii) is when the value represented by the described first information is described second value and value represented by described second information is the 4th value being greater than described 3rd value, selects described second printing model.

By below with reference to the explanation of accompanying drawing to exemplary embodiments, other features of the present invention will be apparent.

Accompanying drawing explanation

Fig. 1 is the perspective view of the image printing device according to exemplary embodiments.

Fig. 2 A and 2B is the perspective view of the print unit according to exemplary embodiments.

Fig. 3 is the schematic diagram of the printhead according to exemplary embodiments.

Fig. 4 is the perspective view of the recovery unit according to exemplary embodiments.

Fig. 5 is the block diagram of the print control system illustrated according to exemplary embodiments.

Fig. 6 is the flow chart of the wetting coefficient sequence of calculation illustrated according to exemplary embodiments.

Fig. 7 A ~ 7D is the figure for illustration of the wetting coefficient sequence of calculation according to exemplary embodiments.

Fig. 8 A ~ 8C is the table used according to exemplary embodiments calculating wetting coefficient.

Fig. 9 is the flow chart for illustration of the Method of printing according to the first exemplary embodiments.

Figure 10 is the figure for illustration of the first printing model according to exemplary embodiments.

Figure 11 A ~ 11D is the figure for illustration of the second printing model according to exemplary embodiments.

Figure 12 is the flow chart for illustration of the Method of printing according to the second exemplary embodiments.

Detailed description of the invention

first exemplary embodiments

Below with reference to the accompanying drawings the first exemplary embodiments of the present invention is described in detail.

Fig. 1 is the perspective view of the internal structure of a part for the printing device 1000 illustrated according to the present invention first exemplary embodiments.

As shown in Figure 1, printing device 1000 comprises thin slice feed unit 101, supply unit 102, print unit 103 and recovery unit 104.Print media is fed in printing device 1000 by thin slice feed unit 101.Supply unit 102 in the Y direction (throughput direction) is above carried by the print media of thin slice feed unit 101 feedings.Print unit 103 is according to image information printed drawings picture on the print medium.Recovery unit 104 carries out recovery operation to maintain the inkjet performance of printhead, thus keeps the quality of the image that will print.

Print media is fed in printing device 1000 by thin slice feed unit 101.The separating piled print media on thin slice feed unit 101 of thin slice feed rolls (not shown) driven by utilizing thin slice feed motor (not shown), and it is fed to supply unit 102 one by one.

Supply unit 102 carries the print media by 101 feedings of thin slice feed unit.Conveying roller 121 clamping driven by utilizing conveying motor (not shown) and niproll (not shown) is transported to the print media of supply unit 102, and is carried by print unit 103.

Ink is sprayed on the print medium by the printhead illustrated after a while according to view data by print unit 103, thus printed drawings picture.Print unit 103 comprises can at the upper reciprocating balladeur train 6 of the X-direction (scanning direction) crossing with Y-direction and print cartridge 3a and 3b be arranged on balladeur train 6 illustrated after a while.

Support that balladeur train 6 is can move back and forth in the X direction along the guide rail be arranged in printing device 1000.When printing on the print medium, balladeur train 6 moves back and forth above print area in company with the balladeur train band 124 utilizing carriage motor (not shown) to drive.By the encoder 125 being arranged on encoder detector (not shown) on balladeur train 6 and extend in printing device 1000, detect position and the speed of balladeur train 6, and according to the movement of detected position and speeds control balladeur train 6.While mobile balladeur train 6, spray ink from print cartridge 3a and 3b, thus can print on the print medium.The print media that print unit 103 prints is clamped by distributing roller (not shown) with by the backing roll (not shown) that distributing roller pressurizes, then be expelled to printing device 1000 outside, wherein supply unit 102 synchronously drives distributing roller and conveying roller 121.

The ink droplet that recovery unit 104 erasing adheres to nozzle surface returns to normal condition to make nozzle surface.Recovery unit 104 comprise illustrate after a while, for covering nozzles after printing capping mechanism and illustrate after a while, for the Wiping mechanism of wiping nozzle surface.Recovery unit 104 also comprises the slider 7 (with reference to figure 4) that can slide in presumptive area to follow balladeur train 6 movement when balladeur train 6 moves to recovery unit 104.

Fig. 2 A is the figure for describing print cartridge 3a and 3b according to this exemplary embodiments in detail.Print cartridge 3a comprise as printhead 5 a part, for spraying color ink, that is, the printhead 5a of cyan ink, magenta ink and yellow ink.Print cartridge 3a comprises three accumulator (not shown) for storing each color ink respectively and with accumulator shape all-in-one-piece, for spraying the printhead 5a of the ink provided from accumulator.In addition, print cartridge 3b comprise as printhead 5 a part, for spraying the printhead 5b of black ink.Print cartridge 3b comprise the accumulator (not shown) for storing black ink and illustrate after a while with accumulator shape all-in-one-piece, for spraying the printhead 5b of the ink provided from accumulator.Printhead 5a comprises nozzle array 512 for spraying cyan ink, for spraying the nozzle array 513 of magenta ink and the nozzle array 514 for spraying yellow ink, and printhead 5b comprises the nozzle array 522 for spraying black ink.Nozzle array 512,513,514 and 522 is arranged on the surface of nozzle arrangement 530.Nozzle array 512 ~ 514 for color ink can be formed in common nozzle component 530, or can be formed in the nozzle arrangement 530 separated respectively.

Although in this exemplary embodiments, describe use as shown in Figure 2 A, the pattern of the print cartridge 3a for color ink and the print cartridge 3b for black ink, this exemplary embodiments can apply different mode.Such as, the print cartridge 3 comprising printhead 5 can also be used, and printhead 5 can comprise the nozzle array 512 for cyan ink, the nozzle array 513 for magenta ink, the nozzle array 514 for yellow ink and the nozzle array 522 for black ink, as shown in Figure 2 B.In print cartridge 3, the accumulator 4 being used for each color is set and can removes from printhead 5 to make it, thus make it change.

Fig. 3 is the figure for describing the surface arranging the printhead 5 of nozzle face according to this exemplary embodiments in detail.

Nozzle array 512 for cyan ink, the nozzle array 513 for magenta ink and for yellow ink nozzle array 514 each include 64 nozzles, namely, nozzle N0 ~ nozzle N63 that the surface of nozzle arrangement 530 is formed, and with the density of per inch 600 nozzles (that is, 600dpi) these 64 nozzles of (predetermined direction) upper arrangement in the Y direction.In addition, the nozzle array 522 for spraying black ink comprises 80 nozzles, that is, the nozzle N0 ~ nozzle N79 surface of nozzle arrangement 530 formed, and arranges this 80 nozzles in the Y direction with the density of 600dpi.It should be noted that " surface of nozzle " used in this exemplary embodiments refers to the surface of nozzle arrangement 530 substantially.With the nozzle array 512 for cyan ink, the nozzle array 513 for magenta ink and in the nozzle array 514 of yellow ink, between mutually adjacent nozzle array, distance d is set, nozzle array 512,513 and 514 is arranged in the X direction.In addition, the nozzle array 522 being used for black ink is arranged to: in X direction, make nozzle array 522 center in the Y direction consistent with nozzle array 514 center in the Y direction for yellow ink, and make nozzle array 522 in the X direction with the nozzle array 514 distance D for yellow ink, wherein, distance D is greater than distance d.

Fig. 4 is the figure for describing the recovery unit 104 according to this exemplary embodiments in detail.

The slider 7 being used as wiper support comprises cap 1A and 1B.Be configured to cap 1A to cover the nozzle be arranged in nozzle array 512,513 and 514, and be configured to cap 1B to cover the nozzle be arranged in nozzle array 522.In addition, wiper 8 and 9 is arranged in slider 7.Wiper 8 is configured to the surface that wiping is arranged in the nozzle in nozzle array 512,513 and 514, and wiper 9 is configured to the surface that wiping is arranged in the nozzle in nozzle array 522.

By slider 7 recovery unit 104 moved to wiper 8 and 9 can the wiping position on surface (nozzle surface) of wiping nozzle arrangement 530 time, recovery unit 104 is moved in the X direction, with wiping nozzle surface while allowing wiper 8 to contact with nozzle surface with 9 relative to print unit 103.

Between the wiper position of readiness that above-mentioned wiping position and wiper 8 and 9 separate with printhead 5, slider 7 can move in z-direction.Slider 7 can also move over a predetermined area, to follow the movement of balladeur train 6 when balladeur train 6 moves to recovery unit 104.Slider 7 moves along the cam face of slider cam 13a and 13b be arranged in slider base unit 13.By this structure, along the moving direction of balladeur train 6, at each position place, slider 7 is become predetermined altitude relative to the Altitude control of nozzle surface in z-direction.

Fig. 5 is the block diagram of the structure of the print control system illustrated according to this exemplary embodiments.

CPU (CPU) 600 controls following each assembly, and carries out data processing by main roll line 605.Particularly, CPU600, while using following assembly according to the program be stored in read-only storage (ROM) 601, carries out a drived control, sledge drive controls and data processing.

Use random access memory (RAM) 602 as the workspace of the data processing for CPU600 etc., and in some cases, RAM602 can be replaced to use hard disk etc.Image input units 603 comprises the interface with main equipment (not shown), and the interim image stored from main equipment input.Image signal processing unit 604 carries out such as converting the color conversion processing of cmyk data as the RGB data of view data of input to and be used for being expressed as many-valued cmyk data and being expressed as the data processing of the binary conversion treatment of two-value data etc.

CPU630 for the reading unit controlling such as scanner etc. comprises input picture processing unit 631, and is connected to ccd sensor 632, ccd sensor driver element 633, image output unit 634 and main roll line 605.Ccd sensor driver element 633 controls the input queued switches of ccd sensor 632.Input picture processing unit 631 makes signal from ccd sensor 632 through the process of such as A/D conversion and shading correction etc.By image generation unit 634, send the image after process in input picture processing unit 631 to image input units 603.

Operating unit 606 comprises the beginning key etc. that permission user carries out controlling.Recovery system control circuit 607, according to the Recovery processing program be stored in RAM602, controls the recovery operation of such as auxiliary ejection etc.Particularly, recovery system control circuit 607 drives printhead 5, wiper 8 and 9 and cap 1A and 1B.

Head Drive and Control Circuit 615 controls the driving being used for spraying the electrothermal transducer set by ink from printhead 5, and makes printhead 5 spray ink for auxiliary ejection and printing.Sledge drive control circuit 616 and pipage control circuit 617, according to program, control the movement of balladeur train 6 and the conveying of print media respectively.

Arranging the substrate being used for spraying black electrothermal transducer from printhead 5, muff heater is set, and the ink of printhead 5 inside can be heated to the temperature wanted.Electro-hot regulator 612 is also set on the substrate to measure the temperature of the ink of printhead 5 inside.Non-essential electro-hot regulator 612 to be arranged on the substrate, but it is outside to be arranged on printhead 5, near such as printhead 5 etc.

Fig. 6 is for illustration of according to the flow chart of the method for the wetting coefficient of degree of this exemplary embodiments for calculating presentation surface and soaking.Fig. 7 A ~ 7D be for illustration of according to this exemplary embodiments for calculating the schematic diagram of the process of wetting coefficient.

At S601, there are each determination in region 30 multiple of the size of 64 points of 600dpi in the Y direction, the quantity (some counting) of counting cyan ink, magenta ink and yellow ink print point separately for 40 points in the X direction separately with 600dpi.Here, owing to making nozzle array 522 for black ink away from other nozzle arrays 512,513 and 514, thus the ejection of black ink is very little to making a difference of ascending air.Therefore, in this exemplary embodiments, only a counting is carried out to cyan ink, magenta ink and yellow ink.

At S602, determine that cyan ink, magenta ink and the yellow ink printing separately of region 30 in each is counted Q by that obtain at S601, multiple, divided by the number of scans N of the specific printing model in the printing model can passed through set by printing device 1000, wherein, this specific printing model allows to print unit area with minimum number of scans.In this exemplary embodiments, can single sweep operation printed drawings picture on the print medium be passed through, therefore printing be counted Q divided by N=1.

At S603, the printing calculating each ink obtained at S602 count with at the single ratio (hereinafter referred to as printing dutycycle) determining the maximum number of points that can be formed by one of ink in region 30.Here, the maximum number of points that can be formed by one of ink is 40 × 64.Therefore, as shown in Figure 7 B, corresponding with image shown in Fig. 7 A, multiple printing dutycycle determining each ink of region 30 in each can be obtained.Such as, with reference to figure 7A, cyan ink composition the 6th band and the 7th band the 3rd arrange and the 4th row place maximum.Therefore, as shown in Figure 7 B, the 3rd row of the 6th band and the 7th band and the printing dutycycle of the 4th row get the high level of 80% ~ 98%.

At S604, print dutycycle based on that obtain at S603, corresponding with cyan ink, magenta ink and yellow ink wherein two two and be stored in advance in the table described after a while in the ROM601 of printing device 1000, calculate wetting coefficient, wherein, described table represents that the possibility that generating plane is wetting when ejection two kinds is black has much.Wetting coefficient represents that each determines the wetability (wettability) in region 30, and prints the corresponding wetability of dutycycle for every two, definition weight coefficient.

Fig. 8 A ~ 8C be for illustration of in order to calculate above-mentioned each print the table of the weight coefficient that dutycycle defines of figure that the wetting coefficient of dutycycle uses and definition to print to(for) two kinds of black each.

When Fig. 8 A illustrates that definition list is shown in ejection magenta ink and yellow ink, the possibility that soaks of generating plane has great and each of magenta ink and yellow ink is printed to the table of the weight coefficient that dutycycle defines.By considering the intensity of the ascending air generated between sprayed magenta ink and yellow ink, calculate this weight coefficient.In addition, when Fig. 8 B illustrates that definition list is shown in ejection cyan ink and yellow ink, the possibility that soaks of generating plane has great and each is printed to the table of the weight coefficient that dutycycle defines.When Fig. 8 C illustrates that definition list is shown in ejection cyan ink and magenta ink, the possibility that soaks of generating plane has great and each is printed to the table of the weight coefficient that dutycycle defines.

These wetting coefficient are different from the parameter of the physical property such as spraying these the two kinds black position relationship of nozzle array, the ejection characteristic of nozzle and ink etc.Therefore, preferably the table shown in Fig. 8 A, 8B and 8C is suitably set according to the equipment energy characteristic of above-mentioned printing device 1000.

In this exemplary embodiments, found through experiments, from the nozzle array 512 for cyan ink of a pair setting one end in the X direction and the ejection of ink of the nozzle array 514 for yellow ink arranging the other end in the X direction, maximum for making a difference of ascending air.Therefore, in this exemplary embodiments, the weight coefficient these shown in each is arranged to: the weight coefficient in the table corresponding with cyan ink and yellow ink shown in Fig. 8 B, be greater than the weight coefficient in the table corresponding with magenta ink and yellow ink shown in Fig. 8 A, and be greater than the weight coefficient in the table corresponding with cyan ink and magenta ink shown in Fig. 8 C.

Fig. 7 C illustrate based on the printing dutycycle shown in Fig. 7 B and represent generating plane soaks when ejection two kinds of specific ink possibility have great weight coefficient, the table shown in Fig. 8 A, 8B and 8C, determine for whole the wetting coefficient that region 30 calculates.

Such as, with reference to the printing dutycycle shown in figure 7B, in the 4th determination region 30 arranged being arranged in the 6th band, the printing dutycycle of cyan ink is 90%, and the printing dutycycle of yellow ink is 90%.With reference to the table shown in figure 8B, find to represent that the possibility wetting according to generating plane when described printing dutycycle ejection cyan ink and yellow ink has great weight coefficient to be 25.Therefore, can determine above-mentionedly to determine that the wetting coefficient of the cyan ink in region 30 and yellow ink is 25.In the same manner, can by the process of S604, for all determine region 30 calculate as seen in figure 7 c, represent that the wetting possibility of generating plane has great wetting coefficient.

At S605, select the maximum wetting coefficient that each acquisition at S604 is determined in multiple wetting coefficient in region 30, and obtain this maximum wetting coefficient determines region 30 wetting coefficient XNure (the second information) as each.So can obtain as illustrated in fig. 7d, represent all data determining the wetting coefficient XNure in region 30.In addition, by calculate the wetting coefficient in the determination region 30 in single band and Total_XNure, can judge that the possibility that generating plane is wetting by the scanning to regulation band has much.

Fig. 9 is the flow chart for illustration of the Method of printing according to this exemplary embodiments.

At S901, by obtaining two-value data to the binaryzation of each ink, and at S902, carry out the above-mentioned wetting coefficient sequence of calculation.

At S903, judge whether to have calculated the multiple wetting coefficient XNure determining region 30 in the single unit area that will scan.Here, unit area corresponds to the pass the region on print media that scanning that printhead 5 carries out can print.Unit area length in the X direction, suitable with the whole width of print media, and the length of length in the Y direction and nozzle array is suitable.In this exemplary embodiments, the size of unit area is 240 points of 600dpi in the X direction and 64 points of 600dpi in the Y direction.It should be noted that single unit area comprises 6 and determines region 30.Below, in some cases, the image formed in unit area can be called band.If be judged as having calculated wetting coefficient XNure, then process enters S904.

At S904, as illustrated in fig. 7d, to calculate in single unit area multiple determine region 30 wetting coefficient XNure's and Total_XNure.After this, process enters S905.

At S905, by obtained and Total_XNure corresponding with the scanning of single unit area, that add to the scanning that the urgent scanning then carried out after wiping nozzle surface the last time starts mutually with aggregate-value that is Total_XNure, to obtain aggregate-value Σ Nure (first information).After this, process enters S906.

At S906, judge whether the aggregate-value Σ Nure calculated at S905 is less than wetting threshold value THNure.Here, wetting threshold value THNure corresponds to such value: in this value, if ink droplet other arbitrarily adheres to nozzle surface, then estimate the discharge performance deterioration of nozzle significantly.According to nozzle and black physical property, wetting threshold value THNrue can be arranged to appropriate value.In this exemplary embodiments, wetting threshold value THNure is arranged to 100.

If aggregate-value Σ Nure is less than wetting threshold value THNure, then process enters S908.At S908, for the scanning of single unit area, the first printing model illustrated after a while is set, then prints.In addition, if aggregate-value Σ Nure is equal to, or greater than wetting threshold value THNure, then process enters S907.At S907, the second printing model that the scan setting for single unit area illustrates after a while, then prints.After the process carrying out S907 or S908, process enters S909.

At S909, judge whether all print datas that rasterisation is received.If be judged as all print datas do not had received by rasterisation, then process is back to S902, at S902, calculates the wetting coefficient XNure of the unit area corresponding with scanning subsequently.If be judged as all print datas that rasterisation is received, be then judged as completing the printing on individual print medium.Then process enters S910, and at S910, discharges print media.

After discharge print media, at S911, judge whether aggregate-value Σ Nure is less than wiping threshold value THWipe.Here, wiping threshold value THWipe corresponds to the wetting value in face for estimating whether to there occurs degree below: to when the print media of prints subsequently, discharge performance due to the wetting and deterioration in face significantly.As wetting threshold value THNure, according to nozzle and black physical property, wiping threshold value THWipe can be arranged to appropriate value.In this exemplary embodiments, wiping threshold value THWipe is arranged to 90.

If aggregate-value Σ Nure is less than wiping threshold value THWipe, be then judged as that the possibility that discharge performance deterioration occurs because face soaks is low when printing the print media of subsequently, and thus stop printing.

In addition, if aggregate-value Σ Nure is greater than wiping threshold value THWipe, then process enters S912, and at S912, by wiper 8 and 9 wiping nozzle surface.After this, process enters S913.At S913, aggregate-value Σ Nure is initialized to Σ Nure=0, and then stops printing.

In this exemplary embodiments, as illustrated in fig. 7d, when rasterisation during all received data, aggregate-value Σ Nure is 106, and therefore aggregate-value Σ Nure is greater than wiping threshold value THWipe90.Therefore, after discharge print media, by wiper 8 and 9 wiping nozzle surface.Then stored aggregate-value Σ Nure is initialized to Σ Nure=0, and stops printing.

The following detailed description of the first above-mentioned printing model and the second printing model.

Figure 10 is the schematic diagram for describing the first printing model according to this exemplary embodiments in detail.

For the first printing model according to this exemplary embodiments, by single sweep operation, printed drawings picture in the unit area 100 of print media.Particularly, in unit area 100, the first printing model is set, in the X direction while mobile print head 5, by the nozzle array 512 for cyan ink, the nozzle array 513 for magenta ink with spray ink, with printed drawings picture for nozzle N0 ~ N63 that the nozzle array 514 of yellow ink is respective.

For the first printing model, image can be completed by single sweep operation in unit area 100, and thus can terminate to print in short time period.

Figure 11 A ~ 11D is the schematic diagram for describing the second printing model according to this exemplary embodiments in detail.

Be different from the first printing model, for the second printing model according to this exemplary embodiments, by 4 scanning, printed drawings picture in the unit area 100 of print media.

For the second printing model, to the nozzle array 512 of cyan ink, the nozzle array 513 being used for magenta ink be used for and nozzle N0 ~ N63 of being used for the nozzle array 514 of yellow ink respective is divided into 4 nozzle sets, that is, the first jet group comprising 16 nozzles comprising nozzle N0 ~ nozzle N15, the second nozzle group comprising 16 nozzles comprising nozzle N16 ~ nozzle N31, comprise the 3rd nozzle sets of 16 nozzles comprising nozzle N32 ~ nozzle N47 and comprise the 4th nozzle sets of 16 nozzles comprising nozzle N48 ~ nozzle N63.

When arranging the second printing model in unit area 100, first, as shown in Figure 11 A, in the X direction while mobile print head 5, printed drawings picture from the region 100a that first jet group ejection Mo Yi is positioned at upstream side one end of the unit area 100 Y-direction.Then, when not carrying print media, as shown in Figure 11 B, by while mobile print head 5 in the X direction from second nozzle group ejection ink, printed drawings picture on the region 100b of unit area 100 adjacent with region 100a in the Y direction.After this, in the same manner, when not carrying print media, as shown in Figure 11 C, by black from the 3rd nozzle sets ejection, printed drawings picture on the 100c of region, and as shown in Figure 11 D, by black from the 4th nozzle sets ejection, printed drawings picture on the 100d of region.When terminating the printing by the 4th nozzle sets, being judged as completing the printing on unit area 100, then carrying print media in the Y direction.

For the second printing model, by each in single sweep operation print area 100a, 100b, 100c and 100d.Therefore, even if when the image printed by the first printing model and the image that printed by the second printing model are mutually adjacent in the Y direction, uneven color between the image that the difference of the print scanned number of times between also can suppressing by region may generate, and can uneven unconspicuous image between print area.

For the second printing model, the amount of the ink sprayed from printhead 5 when can reduce single sweep operation, thus can suppress the generation of ascending air.Therefore, compared with the first printing model, the generation that face is wetting can be suppressed.

In addition, for the second printing model, compared with the first printing model, the number of scans on unit area is comparatively large, and therefore compared with the first printing model, handling capacity reduces.But although the time completed needed for single sweep operation is about 0.3 second ~ 1 second, returning to the time needed for state allowing again to carry out printing after wiping primary nozzle surface, is 10 seconds ~ 30 seconds.Therefore, the reduction of the handling capacity that the increase due to number of scans causes, is less than the reduction of the handling capacity caused due to wiping nozzle surface.Like this, the second printing model makes it possible to the reduction suppressing handling capacity to a certain extent.

According to this exemplary embodiments, if aggregate-value Σ Nure is less than wetting threshold value THNure, then by single sweep operation printed drawings picture in unit area, and when aggregate-value Σ Nure reaches or exceedes wetting threshold value THNure, by 4 scannings printed drawings picture in unit area.In this exemplary embodiments, wetting threshold value THNure is arranged to 100, and as mentioned above, the aggregate-value Σ Nure in constituent parts region is the value shown in Fig. 7 D.Therefore, as shown in Figure 10, each in the first unit area (the first band) ~ the 6th unit area (the 6th band) is printed by single sweep operation, and as shown in Figure 11 A ~ 11D, respectively by each in 4 scanning and printing the 7th and the 8th unit areas (the 7th band and the 8th band).

Utilize said structure, when the degree that generating plane is wetting can not affect discharge performance, printed by the printing model more paying attention to improving handling capacity, and when discharge performance may decline because face soaks, printed by the printing model more paying attention to suppressing to be soaked by face caused discharge performance decline.Therefore, handling capacity can be suppressed at the same time to reduce and suppress to be soaked while caused discharge performance declines by face to print.

second exemplary embodiments

In the first exemplary embodiments, describe pattern below: in this mode, if aggregate-value Σ Nure is less than wetting threshold value THNure, the first printing model is then utilized to print, and if aggregate-value Σ Nure is equal to, or greater than wetting threshold value THNure, then the second printing model is utilized to print.

Meanwhile, in this exemplary embodiments, except the relation between aggregate-value Σ Nure and wetting threshold value THNure, also to consider in unit area multiple determines that the respective wetting coefficient XNure in region 30 determines the pattern of the printing model that will arrange.

It should be noted that the explanation of will omit the structure identical with above-mentioned first exemplary embodiments.

Figure 12 is the flow chart for illustration of the Method of printing according to this exemplary embodiments.

In this exemplary embodiments, at S1206-1, carry out the process identical with the S906 of the first exemplary embodiments.If the aggregate-value Σ Nure obtained when printing in single unit area is less than wetting threshold value THNure, then process enters S1208, and is printed by the first printing model, wherein, by the first printing model, completed the image in unit area by single sweep operation.In addition, if aggregate-value Σ Nure is equal to, or greater than wetting threshold value THNure, then process enters S1206-2.

At S1206-2, judge to determine in region 30 formation the multiple of single unit area, whether there is the determination region 30 that wetting coefficient XNure is greater than the second wetting threshold value THNure2.Here, the second wetting threshold value THNure2 represents that the possibility that generating plane soaks has great value, and as wetting threshold value THNure, can be set to appropriate value according to the physical property of nozzle and ink.In this exemplary embodiments, if at least one having that wetting coefficient XNure is equal to, or greater than 1 determines region 30, then estimate that generating plane soaks, and thus the second wetting threshold value THNure2 is arranged to 1.

And if if aggregate-value Σ Nure is equal to, or greater than wetting threshold value THNure there is not the determination region 30 that wetting coefficient XNure is equal to, or greater than the second wetting threshold value THNure2 in single unit area, then process enters S1208.At S1208, the first printing model is set, and thus prints.In addition, if aggregate-value Σ Nure be equal to, or greater than that and if wetting threshold value THNure exists that wetting coefficient XNure is equal to, or greater than the second wetting threshold value THNure2 at least one determine region 30, then process enters S1207.At S1207, the second printing model is set, wherein, by the second printing model, in unit area, completes image by 4 times scanning.

In other words, in this exemplary embodiments, wetting threshold value THNure is arranged to 100, and the second wetting threshold value THNure2 is arranged to 1.As mentioned above, with formation the multiple of constituent parts region, the aggregate-value Σ Nure in constituent parts region determines that the wetting coefficient XNure in region 30 gets the value shown in Fig. 7 D.

Therefore, in the unit area comprising the first unit area (the first band) ~ the 6th unit area (the 6th band), aggregate-value Σ Nure is less than 100, therefore first printing model is set, and as shown in Figure 10, printed in each regulation unit area by single sweep operation.

In the 7th unit area (the 7th band), aggregate-value Σ Nure is equal to, or greater than 100, and in the 3rd row and the 4th determination region 30 arranged, wetting coefficient XNure is equal to, or greater than 1, is therefore judged as soaking by generating plane.Therefore, the second printing model is set in S1207, and as shown in Figure 11 A ~ 11D, is printed by 4 scanning.

In addition, in the 8th unit area (the 8th band), aggregate-value Σ Nure is equal to, or greater than 100, and determines that, in region 30, wetting coefficient XNure is equal to, or greater than 0 each.Therefore, although the face that may occur on the surface of printhead 5 to a certain degree soaks, be judged as when printing the 8th unit area, face is wetting can not be in progress further.Therefore, the first printing model is set in S1208, and as shown in Figure 10, is printed by single sweep operation.

After this, the process of S1209 ~ S1213 and the identical of S909 ~ S913 described in reference diagram 9 in the first exemplary embodiments.

According to said structure, even if when there occurs face to a certain extent and being wetting, if by the wetting impossible progress further of scanning plane subsequently, then the printing model by having less number of scans prints.So while suppression soaks caused discharge performance deterioration by face, the decline of handling capacity can be suppressed further.

other embodiments

Storage medium can also be recorded in (such as by reading and performing, non-transitory computer-readable storage media) on computer can perform instruction with the system of more than one function or the computer of equipment that carry out in the above embodiment of the present invention and realize embodiments of the invention by following method, wherein, such as, read by the computer of system or equipment from storage medium and perform computer and can perform instruction and carry out the method, to carry out the one or more function in above-described embodiment.Computer can comprise more than one in CPU (CPU), microprocessing unit (MPU) or other circuit, and can comprise the network of the computer of separation or the computer processor of separation.By such as network or storage medium, computer can be performed instruction and be supplied to computer.Storage medium can comprise memory, CD (such as compact disk (CD), digital versatile disc (DVD) or the Blu-ray Disc (BD) of such as more than one hard disk, random access memory (RAM), read-only storage (ROM), distributed computing system ^tMdeng), flash memory devices and storage card etc.

Although be illustrated under hypothesis in above-mentioned each exemplary embodiments below: the principal element causing the ascending air causing generating plane to soak, be from the ejection of the ink of the nozzle array of three for spraying color ink two nozzle arrays wherein and the pattern calculating wetting coefficient based on the spray volume from these two nozzle arrays, but can different mode be adopted.The principal element of ascending air is caused to change according to the various factors of the setting of such as nozzle array and black physical property etc.Such as, can only based on the ink amount that the nozzle array wherein having maximum black spray volume from the nozzle array of three for spraying color ink sprays, calculate wetting coefficient, or can based on the ink amount sprayed from these three nozzle arrays and calculate wetting coefficient.In addition, although consider ink amount the making a difference very little and not thus being used to calculate wetting coefficient ascending air sprayed from the nozzle array for black ink, the ink amount sprayed from the nozzle array for black ink can also be used.

In addition, assuming that in above-mentioned each exemplary embodiments, from the nozzle array of three for spraying color ink wherein be set up for a pair one end in the X direction, for cyan ink nozzle array 512 and be set up other end place in the X direction, for the ejection of the ink of the nozzle array 514 of yellow ink, what occur ascending air has the greatest impact.Therefore, as figs. 8 a to 8 c, use multiple table to calculate wetting coefficient, wherein, in this multiple table, the table corresponding with the printing dutycycle of cyan ink and yellow ink is topmost.Alternatively, following such pattern can also be adopted.Such as, such table can be used: in the table corresponding with the printing dutycycle of cyan ink and yellow ink, the table corresponding with the printing dutycycle of cyan ink and magenta ink and the table corresponding with the printing dutycycle of magenta ink and yellow ink, the wetting threshold X Nure for each printing dutycycle is identical.

In addition, in above-mentioned each exemplary embodiments, use and in unit area, complete the printing model of image as the first printing model by single sweep operation, and use completes the printing model of image as the second printing model by 4 scanning in unit area.Alternatively, different mode can be adopted.As long as the printing model that the second printing model is such below being, just can obtain the effect described in each exemplary embodiments: be arranged to compared with the first printing model by the allowed ink that will spray in single sweep operation amount, the generation of ascending air can be suppressed, and compared with the first printing model, by more times number scanning and printing image.Such as, the printing model completing image by 2 scanning in unit area can be adopted as the first printing model, and can use and in unit area, complete the printing model of image as the second printing model by 8 scanning.

In addition, although in above-mentioned each exemplary embodiments, have employed the pattern for the second printing model printed drawings picture in the following manner: each nozzle array is divided into multiple nozzle sets, the quantity of the nozzle of ink is sprayed during to be limited in single sweep operation, and between continuous print scanning when not carrying print media, out of ink by these nozzle sets continuous sprayings, but can different mode be adopted.Such as, even if utilize pattern below also can obtain and the same effect described in each exemplary embodiments: when using all nozzles in single sweep operation, namely, during nozzle N0 ~ nozzle N63, unit area carries out 4 times only to the scanning of one of them ejection ink of the adjacent column of four in this unit area.

In addition, although the pattern below describing in above-mentioned each exemplary embodiments: the distance between print media and nozzle surface keeps constant, and for various ink, by using the table of monotype to calculate wetting coefficient, different mode can be adopted.Such as, when the distance between print media and nozzle surface changes, the distance that the occurrence degree of ascending air or consideration ascending air ink droplet rise changes equally.Therefore, preferably by use, according to the distance between print media and nozzle surface, different multiple tables calculate wetting coefficient.

According to printing device and the Method of printing of example of the present invention, can suppress at the same time soak the deterioration of caused print quality by face and print while improving handling capacity.

Although describe the present invention with reference to exemplary embodiments, should be appreciated that, the present invention is not limited to disclosed exemplary embodiments.The scope of appended claims meets the widest explanation, to comprise all this kind of amendments, equivalent structure and function.

Claims (20)

1. a printing device, it is by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described printing device is to comprise:

Selection unit, for selecting the first printing model or the second printing model for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number,

Wiper unit, is provided with the surface of the nozzle arrangement of described multiple nozzle for wiping;

Obtain unit, for obtain with scan as follows in black spray volume and the relevant first information, this scanning is the scanning the scanning carried out after the surface of and then nozzle arrangement described in described wiper unit wiping, to another scanning be ejected to by ink on one of unit area; And

Control unit, controls to print for described first printing model selected by described selection unit or described second printing model,

Wherein, described selection unit:

I (), when the value represented by the described first information that described acquisition unit obtains is the first value, selects described first printing model; And

(ii) when the value represented by the described first information that described acquisition unit obtains is the second value being greater than described first value, described second printing model is selected.

2. printing device according to claim 1, wherein,

Described selection unit:

I (), when the value represented by the described first information that described acquisition unit obtains is less than the predetermined threshold large and less than described second value than described first value, selects described first printing model; And

(ii) when the value represented by the described first information that described acquisition unit obtains is equal to, or greater than described predetermined threshold, described second printing model is selected.

3. a printing device, it is by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described printing device is to comprise:

Selection unit, for selecting the first printing model or the second printing model for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number,

Wiper unit, is provided with the surface of the nozzle arrangement of described multiple nozzle for wiping;

Obtain unit, for obtain with scan as follows in black spray volume and the relevant first information, this scanning is the scanning the scanning carried out after the surface of and then nozzle arrangement described in described wiper unit wiping, to the single pass be ejected to by ink on one of unit area, and described acquisition unit also measures the second relevant information for obtaining with the ink that will be ejected on one of described unit area in described single pass; And

Control unit, controls to print for described first printing model selected by described selection unit or described second printing model,

Wherein, described selection unit:

I (), when the value represented by the described first information that described acquisition unit obtains is the first value, selects described first printing model;

(ii) when the value represented by the described first information that described acquisition unit obtains be greater than the second value of described first value and value represented by described second information that obtains of described acquisition unit is the 3rd value, select described first printing model; And

(iii) when the value represented by the described first information that described acquisition unit obtains is described second value and value represented by described second information that obtains of described acquisition unit is the 4th value being greater than described 3rd value, described second printing model is selected.

4. the printing device according to claim 1 or 3, wherein,

When the value represented by the described first information that described acquisition unit obtains is the 5th value, the surface of nozzle arrangement described in described wiper unit wiping, and when the value represented by the described first information that described acquisition unit obtains is the 6th value being less than described 5th value, the surface of nozzle arrangement described in the not wiping of described wiper unit.

5. printing device according to claim 4, wherein,

When completing the image printing on individual print medium, described wiper unit judges whether the surface of nozzle arrangement described in wiping.

6. printing device according to claim 4, wherein, also comprises:

Memory cell, for storing the described first information that described acquisition unit obtains, and

Initialization unit, for when nozzle arrangement described in described wiper unit wiping surperficial, initializes the described first information be stored in described memory cell.

7. the printing device according to claim 1 or 3, wherein,

Described first printing model is the printing model utilizing the single pass of described printhead printed drawings picture in unit area.

8. the printing device according to claim 1 or 3, wherein, also comprises:

Supply unit, for after having carried out utilizing described first printing model or the printing of described second printing model on unit area, the throughput direction intersected with described scanning direction has carried described print media relative to described printhead.

9. printing device according to claim 8, wherein,

Described second printing model is when not carrying described print media relative to described printhead, by carrying out the printing model of printed drawings picture in unit area with printhead described in described second number of scans.

10. printing device according to claim 9, wherein,

Described second printing model be in the scanning each time by the scanning of described second number at described printhead from the nozzle sets ejection ink of multiple nozzle sets in unit area the printing model of printed drawings picture, wherein, by the described multiple nozzle in described nozzle array being divided into the quantity group corresponding with described second number, obtain described multiple nozzle sets.

11. printing devices according to claim 1 or 3, wherein,

Described printhead comprises the multiple nozzle arrays be arranged on described scanning direction, described multiple nozzle array comprises the first jet array at one end place be arranged on described scanning direction and is arranged on the second nozzle array at the other end place on described scanning direction, and

When described acquisition unit obtains and prints in each unit area of described multiple unit area, the the first black spray volume sprayed from described first jet array and the second black spray volume of spraying from described second nozzle array and, as the information relevant with the black spray volume towards this unit area.

12. printing devices according to claim 1 or 3, wherein,

Described printhead comprises the first jet array of the ink for spraying the first color and the second nozzle array for the ink that sprays the second color being different from described first color,

Described acquisition unit comprises the first acquisition unit and second and obtains unit,

Described first obtain unit obtain towards by described scanning direction, split that unit area obtains multiple determine in region each determine the black spray volume of the black spray volume of the ink of that region sprays, described first color and the ink of described second color,

Described second obtains unit obtains the black spray volume of the ink of described first color that obtains of unit and described second color based on described first and represents first table of determined first weight coefficient of each black spray volume of the ink for described first color and described second color, obtain for described multiple determine in region each determine first coefficient in region, and

Value represented by the described first information is corresponding with from the scanning the scanning carried out after the surface of and then nozzle arrangement described in described wiper unit wiping, to spray the scanning of ink towards one of described unit area, for form unit area described multiple determine first coefficient in region and.

13. printing devices according to claim 12, wherein,

Each described first weight coefficient represented in described first table, corresponding with the wettability of the surface of the described nozzle arrangement when spraying the ink of described first color and described second color with the black spray volume corresponding with each described first weight coefficient.

14. printing devices according to claim 1 or 3, wherein,

Described printhead comprise the ink for spraying the first color first jet array, for spraying the second nozzle array of the ink of the second color being different from described first color and the 3rd nozzle array for the ink that sprays the 3rd color being different from described first color and described second color

Described acquisition unit comprises the first acquisition unit and second and obtains unit,

Described first obtain unit obtain towards by described scanning direction, split that unit area obtains multiple determine in region each determine the black spray volume of the black spray volume of the black spray volume of the ink of that region sprays, described first color, the ink of described second color and the ink of described 3rd color

Described second obtains unit obtains the black spray volume of the ink of described first color that obtains of unit and described second color based on described first and represents the first table of the first weight coefficient that each black spray volume for the ink of described first color and described second color defines, obtain for described multiple determine in region each determine first coefficient in region; Obtain the black spray volume of the ink of described first color that obtains of unit and described 3rd color based on described first and represent the second table of the second weight coefficient that each black spray volume for the ink of described first color and described 3rd color defines, obtain for described multiple determine in region each determine second coefficient in region; And obtain the black spray volume of the ink of described second color that obtains of unit and described 3rd color based on described first and represent the 3rd table of the 3rd weight coefficient that each black spray volume for the ink of described second color and described 3rd color defines, obtain for described multiple determine in region each determine the 3rd coefficient in region, and

Value represented by the described first information is corresponding with from the scanning the scanning carried out after the surface of and then nozzle arrangement described in described wiper unit wiping, to spray the scanning of ink towards one of described unit area, for form unit area described multiple determine the maximum in described first value in region, described second value and described 3rd value and.

15. printing devices according to claim 14, wherein,

Each described first weight coefficient represented in described first table, corresponding with the wettability of the surface of the described nozzle arrangement when spraying the ink of described first color and described second color with the black spray volume corresponding with each described first weight coefficient,

Each described second weight coefficient represented in described second table, corresponding with the wettability of the surface of the described nozzle arrangement when spraying the ink of described first color and described 3rd color with the black spray volume corresponding with each described second weight coefficient, and

Each described 3rd weight coefficient represented in described 3rd table, corresponding with the wettability of the surface of the described nozzle arrangement when spraying the ink of described second color and described 3rd color with the black spray volume corresponding with each described 3rd weight coefficient.

16. printing devices according to claim 3, wherein,

Described selection unit:

I (), when the value represented by the described first information that described acquisition unit obtains is less than the first threshold large and less than described second value than described first value, selects described first printing model;

(ii) when the value represented by the described first information that described acquisition unit obtains is equal to, or greater than described first threshold and value represented by described second information that obtains of described acquisition unit is less than the Second Threshold large and less than described 4th value than described 3rd value, described first printing model is selected; And

(iii) when the value represented by the described first information that described acquisition unit obtains is equal to, or greater than described first threshold and value represented by described second information that obtains of described acquisition unit is equal to, or greater than described Second Threshold, described second printing model is selected.

17. 1 kinds of Method of printings, it is for by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described Method of printing is to comprise the following steps:

Select step, the first printing model or the second printing model is selected for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number,

Wiping is provided with the surface of the nozzle arrangement of described multiple nozzle;

Obtain with scan as follows in black spray volume and the relevant first information, this scanning is the scanning carried out after the surface of and then nozzle arrangement described in wiping, scanning to another being ejected to by ink on one of unit area scans; And

Control to print according to described first printing model selected in described selection step or described second printing model, wherein,

I (), when the value represented by the described first information is the first value, selects described first printing model, and

(ii) when the value represented by the described first information is the second value being greater than described first value, described second printing model is selected.

18. 1 kinds of Method of printings, it is for by while scanning and printing head in a scanning direction, printed drawings picture on multiple unit areas of print media is carried out from described printhead ejection ink, wherein, described printhead has at least one nozzle array, in described nozzle array, orientation arranges the multiple nozzles for spraying ink, described scanning direction intersects with described orientation, the length of each unit area in described multiple unit area in described orientation is suitable with the length of described nozzle array in described orientation, the feature of described Method of printing is to comprise the following steps:

Select step, the first printing model or the second printing model is selected for each unit area in described multiple unit area, wherein, described first printing model is for the printing model by carrying out printed drawings picture on unit area with printhead described in the first number of scans, described second printing model be restriction described printhead second number scanning each time scanning in spray ink nozzle quantity while, by carrying out the printing model of printed drawings picture on unit area with printhead described in described second number of scans, wherein, described second number is more than described first number,

Wiping is provided with the surface of the nozzle arrangement of described multiple nozzle;

Obtain and the black spray volume in following scanning and the relevant first information, this scanning is the scanning the scanning carried out after the surface of and then nozzle arrangement described in wiping, to the single pass be ejected to by ink on one of unit area, and obtains and measure the second relevant information with the ink that will be ejected on one of described unit area in described single pass; And

Control to print according to described first printing model selected in described selection step or described second printing model, wherein,

I (), when the value represented by the described first information is the first value, selects described first printing model;

(ii) when the value represented by the described first information be greater than the second value of described first value and value represented by described second information is the 3rd value, select described first printing model; And

(iii) when the value represented by the described first information is described second value and value represented by described second information is the 4th value being greater than described 3rd value, described second printing model is selected.

19. Method of printings according to claim 17 or 18, wherein,

When the value represented by the described first information is the 5th value, the surface of nozzle arrangement described in wiping, and when the value represented by the described first information is the 6th value being less than described 5th value, the surface of nozzle arrangement described in not wiping.

20. Method of printings according to claim 19, wherein, further comprising the steps of:

Store the first information obtained, and

When nozzle arrangement described in wiping surperficial, initialize the first information stored.